MICHIGAN CHESS ASSOCIATION

Michigan
October
2000
Chess
Online
E-mail Opening Adventures
(Part II)
by by Sean C. Stidd
Continued from Part I
 
S. Stidd (1871) – M. Svenson (1719)
[B14/10] Caro-Kann: Panov
Internet,1999
1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 
    This is the basic position of the Panov-Botvinnik attack.  This is a sharp attacking line, in which play is usually characterized either by White accepting an isolated d-pawn for active piece play or by White’s playing c5 in an attempt to pass a pawn on the queenside while Black counterattacks on the kingside.  A third, extremely sharp, option involves a temporary pawn sacrifice by Black in exchange for very active piece play after 5...g6.
5...e6 6.Nf3 Nbd7? 
    This is an inaccurate placement of this knight.  Normally this knight would go to c6.  But how to punish it?  7.Bd3 gives up tempi after 7...dxc4  8.Bxc4 Nb6, although it still might be a reasonable move.  One would expect that playing 7.cxd5, yielding positions from the Semi-Tarrasch in which Black invariably places the QN on c6, would be strong, yet 2 of the 3 games with this move in ChessBase were White losses!  ChessBase also revealed that White had a 100% score with 7.a3, but such a quiet move seemed suspicious to me.  Again, there are good transpositions to the Semi-Tarrasch if Black chooses to continue that way, but after 7...Be7 Black seems to have transposed to a more normal line of the Panov attack (1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Be7) where Black has already managed to develop his knight (albeit to an inferior square) while White has made a potentially useful but relatively passive pawn move.  I could find nothing completely convincing after 7.a3, though again I certainly couldn’t say the move is bad.  Indeed, I did not exhaustively analyze any of these moves, because it occurred to me that the previously unplayed...
7.c5!
...was the solution to all my problems!  The point of this move is that if Black stays with the normal plan of 7...Be7, White can play 8.b4! and is already threatening the standard plan of creating a passed pawn on the queenside, where the QN’s bad placement on d7 is a real problem.  When Black has played instead 6...Be7 this plan is considered weak, on the basis of a 1980 correspondence game between Estrin and Borngasser.  After 6...Be7 7.c5 0-0 8.b4?! Ne4 9.Qc2 Nc6 10.b5
    Black has the strong sacrifice 10...Nxd4! 11.Nxd4 Bxc5 12.Nxe4 Bxd4 13.Nc3 Bd7, with compensation according to BCO2 and a big advantage according to NCO.  I think the former assessment is more accurate;  Black’s plan of advancing his big center towards White’s currently uncastled king is strong, but White is up a piece.  If instead of 10.b5 White tries to defend the b-pawn with 10.a3, 10...e5 gives Black the initiative without sacrificing. (This is another argument against 7.a3; one thing Black’s QN does do just as well from d7 as from c6 is support e5.)  White can also try 13.Ng5 in this line, which will keep this knight on the kingside to help defend but will also allow Black to gain tempi as he throws his pawns forward faster.  But with the knight on d7 this sacrifice is not possible, so I should be able to get away with setting up a strong bind on the queenside.
    Presumably seeing all this, my opponent chooses a more double-edged move, whose consequences I had to calculate very accurately when I played 7.c5:
7...b6? 
    Black takes up the challenge!  Mr. Svenson is arguing that I have erred in advancing my c-pawn;  he will try to capture it by wasting a couple of moves with his knight.  However, this gives White all the time he needs to develop a winning attack with his queen and minor pieces.
8.c6 Nb8 9.Qa4 Qc7 
    Black can also try 9...Qd6.  In this case, White should respond with the stunning 10.a3!, taking away the possibility of Black removing pressure with 10...Qb4+ 11.Qxb4 Bxb4+.  If Black then plays 10...Nxc6, the pretty sacrifice 11.Bf4! decides matters, e.g. 11...b5 (11...Qxf4 loses a rook) 12.Bxb5 Qxf4 13.Bxc6+ Bd7 14.Ne5 Rd8 (managing to save the rook) 15.Nb5 and Black cannot cope with the onslaught.
10.Nb5 Qe7 
    10...Qxc6 loses immediately to 11.Ne5.
11.a3! 1-0. 
    Preventing Black from exchanging queens, as in the note to Black’s ninth.  Here Mike had to withdraw from the tournament due to Internet server problems (this was an email game), but he is now completely lost.  Best play for both sides would continue 11...Nxc6 (11...Ne4  12.Bf4 e5 and now either capture leads to a winning position for White; a sample of the success of White’s strategy can be seen in the line 13.Nxe5 g5 14.c7 Nd7 15.Nxa7 gxf4 [15...Rxa7 16.Qxa7 gxf4 17.Qa8 Nd6 18.Bb5! and wins] 16.Nxc8 Rxa4 17.Nxe7 followed by queening the c-pawn) 12.Bf4 Kd8 (desperation, but moving the light-squared bishop allows a decisive check on c7 or d6, while 12...e5 is met by 13.dxe5 Kd8 14.Nd6 Bd7 15.Bb5 with an unbreakable bind) 13.Bc7+ Kd7 14.Ne5+ Nxe5 15.dxe5 Ne4 16.Rc1 Nc5
It looks like Black has almost broken the pressure, but one more trick wins for White: 
17.Nxa7+! Kxc7 (17...Nxa4 18.Bb5#) 18.Qc6+ Kd8 19.Qxa8 Qb7 20.Qxc8+ Qxc8 
21.Nxc8 Kxc8 22.b4, leaving White up a rook.  I must admit that I had not seen all the way to this final queen sacrifice when playing 7.c5!, but I did feel (with justification, as Fritz helped me show after the game) that the tremendous lead in development and queenside pressure that White gets in these positions was more than enough to justify the potential loss of the c-pawn.

S. Stidd (1871) – F. Siewerdt (1925)
[B82/21] Sicilian: Scheveningen (Matanovic)
Internet,1999
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4 
    This system is sometimes called the Tal Attack after the famous 10th and decisive game of the 1965 Bled candidates’ match which Tal won against Larsen.  Their game actually went 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 d6 6.Be3 Nf6 7.f4 Be7 8.Qf3, leading to dangerous attacking positions for White which NCO now regards as advantageous in every line, though then the system was almost completely unexplored.  Perhaps the name “Tal Attack” should be reserved for those lines in which the queen actually gets to f3, but in any event the name is more interesting then “Sicilian Scheveningen with 6 f4,” for example.
6...Nc6 7.Be3 e5 
    Moving this pawn a second time in the first seven moves ought to be suspect, but in fact Black gets good play after this move and it is difficult to refute.
8.Nf3 
    This is the preferred continuation of both BCO2 and NCOBCO2 claims equality for Black after both 8.Nxc6 bxc6 9.Bc4 Ng4 10.Bd2 exf4 11.Bxf4 Be7 12.Qf3 0-0 13.0-0 Bf6 (Hubner-Andersson, Bugojno 1982) and  8.Nde2 Be7 9.Qd2 a6 10.h3 b5 11.Ng3 Qa5 12.Be2 exf4 13.Bxf4 Be6 14.0-0 0-0 (Sibarevic-Andersson, Banja Luka 1978).
8...Ng4 9.Bc1 
    Spassky played this move against Larsen at Tilburg in 1981.  I have to say that I don’t trust it; undeveloping a piece like this is very provocative, and even aside from the possibility of a direct refutation, Black can try to gain time with simple developing responses like 9...Be7.  The best move here now is considered to be 9.Qd2.  Black can continue with ...g6 or ...Be7, though these are both supposed to be better for White, but the main line is 9...Nxe3 10.Qxe3 exf4 11.Qxf4 Be6 12.0-0-0.  The ‘latest word’ on this variation is supposed to be Svidler’s win over Andrei Sokolov in the 1994 Russian Championship, which continued 12...Be7 13.Nd5 (with a plus for White according to NCO) and saw Svidler easily realize the plan of neutralizing Black’s counterplay, doubling rooks on the d-file, and winning the d-pawn and eventually the game.  I, however, managed to develop a certain paranoia about a different response, 12...Qa5, which has led to several draws and which I had no clear idea how to handle.  13.Ng5? may be a mistake because of the wild variation 13...Bxa2 14.Nxa2 Qxa2 15.Bc4 Qxc4 16.b3 Nd4! 17.Rxd4 (17.bxc4 Ne2+ wins the queen back and hence a piece) 17...Qc7, when White has some initiative for his pawn but nothing more.  If Black doesn’t want to risk this wildness, 13.Ng5 Be7 14.Nxe6 fxe6, as played in a 1993 Bundesliga game between Heissler and Vogt, doesn’t seem all that bad for Black either, since he has e5 for his queen and knight.  13.Nd4 Be7 14.Nxe6 fxe6 is the same thing.  Certainly White is not in danger in these lines, but they looked somehow drawish, and I really wanted to win this game, having lost to Frank in our last encounter, on the Black side of an extremely wild King’s Gambit.
    BCO2 recommends instead 9.Bd7 exf4 10.Bxf4, but there is a problem:  Black can play 9...Qb6.  After 10.Qe2 Qxb2 11.Rb1 Qa3 White won in a game Levitina-Fomina from the 1981 Russian Women’s Championship, but I was afraid of the hyper-materialistic 11...Qxc2, after which I can see neither a way to trap Black’s queen nor any easy way to get castled and start an attack.  White’s queenside is decimated and his king is stuck in the middle.  I know it looks dangerous, but where is the refutation?  On the other hand, after 9.Bc1 Qb6 10.Qd2 exf4 11.Nd5 Qd8 12.Qxf4 I prefer white.  Finally, there is nothing in the databases besides 9...exf4 in response to 9.Bc1, so if Frank wanted to play something new, he would be completely on his own.
9...exf4 
    After two weeks of contemplation, Frank finally acquiesces to the theoretical continuation.
10.Bxf4 Be7 
    10...Qb6 really doesn’t work here;  after 11.Qd2 Qxb2 12.Rb1 Qa3 13.Nb5 Qxa2 14.Rd1 Black has two pawns, but his position is about to get ripped to pieces.
11.Bc4?! 
    This move is probably not the best;  Frank’s play in the game shows what is wrong with it.  According to BCO2 I should be better after 11...0-0 12.Qd2 Nge5 13.Bb3 Bg4 14.Rf1, but there is an improvement...
    The Spassky-Larsen game I had been following up to here continued 11.Qd2, which BCO2 rated as unclear after 11...Be6 12.0-0-0 0-0 13.h3 Nge5.  However, I think this may be the better continuation;  Spassky did not plant his knight on d5 until the 17th move, and it’s possible that by putting it there earlier, with the idea of trading off the bishop on e7 and laying siege to the d-pawn a la Svidler, White could gain an advantage.
11...0-0 12.Qd2
12...Be6!  
    This move gives Black something close to complete equality, and is substantially better than BCO2’s 12...Nge5.  After 13.Nd5? Nge5 14.Bb3 Bh4+ 15.Nxh4 Qxh4+ 16.Qf2 Qxf2 17.Kxf2 Nd4 Black is better, and the game continuation, the only other reasonable one I could find, is drawish.
13.Bb3 Bxb3 14.axb3 Bf6 15.0-0 Re8 16.Rae1 Bxc3 17.bxc3 Nf6
    Black has simplified the position and given White doubled b-pawns; the only thing White has to show for it is a bishop and a pawn on e4 which stands better than its counterpart on d6.  I determined here that my only winning chances lay in exploiting my bishop in an open position in an endgame, and so I played the first new move of the game...
18.e5 
...with the object of simplifying still further to enhance the strength of my bishop and perhaps to exploit the half-open a-file with my rooks.  In a game from the 1997 Chigorin Memorial, Smikovski tried to keep things in the middlegame against Seeman with 18.Qd3, but after 18...Qb6+ 19.Be3 Qc7 20.Bd4 not only did Seeman manage to draw with 20...Ng4, but he could have played the simpler and stronger 20...Ne5 as well, creating a position with an open d-file and not much chance of advantage for either side after a minor piece trade on e5.
18...dxe5 19.Qxd8 Raxd8 20.Nxe5 Nd5? 
    This surprised me.  After  20...Nxe5 21.Bxe5 Ng4 22.Bd4 a6 White has no advantage other than that of bishop vs. knight.  Now in addition Black will have two isolated pawns on the queenside.
21.Nxc6 bxc6 
    This is forced; 21...Rxe1 fails to 22.Nxd8 Rxf1+ 23.Kxf1 Nxf4 24.Nxb7, a won knight ending for White on account of his extra pawn and 3-1 queenside majority.
22.Bd2 
    I thought I should go for something more than 22.Rxe8+ Rxe8 23.Bd2 Re2 24.Re1 Rxe1+ 25.Bxe1 f5 26.Kf2 g5 27.c4 Nf6, where Black’s knight can post itself strongly on e4 and his kingside majority is getting active.
22...Nf6 23.Bg5 
    Again, after 23.Rxe8+ Black is getting off too easily; after e.g. 23...Nxe8 24.Be3 a6 25.Ra1 Ra8 White is better, but there is lots of work left to be done and Black may be able to defend.
23...Rxe1 24.Rxe1 Re8 25.Rxe8+ 
    With one pair of rooks off, though, I’m happy to see the other go;  this is the ending I was aiming for from move 18.
25...Nxe8 26.Kf2 Nc7 27.Be3 
    I think this move order is the most accurate.  After 27.c4 Black can try to set up a fortress with 27...f5! 28.Be3 a6 29.Kf3 Ne6.  In this position Black controls all the entry squares to his position except on the a-file, and his pawns are well placed on light squares where my bishop can’t get at them.  Moreover, if I try to run my king over to the a-file, Black’s kingside majority becomes a real asset for him.  Note that move order is crucial for Black here;  after the more obvious 27...Ne6 28.Be3, both 28...c5 and 28...a6 can be met with 29.g4!, ensuring that entry squares for my more active king remain because Black cannot establish a pawn on f5.  (29...g6 30.g5; 29...h6 30.h4.)
27...Nb5? 
    This blunder is very close to losing on the spot;  the Black knight becomes entangled on my queenside.  27...a6 was preferable, with an advantage for White but plenty of work left to be done.
28.c4 Na3 29.c3 Nb1 
    Watch the knight get buried deeper and deeper in my position.  The alternate plan of playing 29...Nc2 and racing the f-pawn fails to 30.Bxa7 f5 31.Ke2 Na1 (or 31...f4 32.Kd2 Na1 33.b4 g5 34.Kc1 Nb3+ 35.Kc2 Na1+ 36.Kb2 g4 37.Kxa1 f3 38.gxf3 gxf3) 32.b4 Nc2 33.Kd2 Na3 34.Kd3 Nb1 35.Kc2 Na3+ 36.Kb3 Nb1 37.Be3 g5 38.g3.   Further, Black no longer has time to protect the pawn with 29...a6, since then the knight cannot escape: 30.Ke2 Nc2 31.Bb6 Na1 (31...Na3 32.Kd2) 32.Kd1 a5 (32...Nxb3 33.Kc2 Na1+ 34.Kb2) 33.Bxa5 Nxb3 34.Bb6.  Finally, if Black tries to break up my pawn structure with a7-a5-a4, the passed a-pawn I get will decide: 29...a5 30.Ke2 a4 31.bxa4 Nxc4 32.Kd3 Nb2+ 33.Kc2 Nc4 (33...Nxa4 34 Kb3 again traps the knight) 34.Bc5 f5 35.Kb3 Ne5 36.a5 Nd7 37 Bd6 and the a-pawn cannot be stopped.
30.Ke2 Nxc3+ 31.Kd3 Na2 32.Bxa7 
    32.Bd2 fails to trap the knight after 32...c5, although 32.Kd4 Nb4 33.Kc5 Nc2 34 Bf2 seems playable as well.
32...Nb4+ 33.Kd4 Na6 34.Ke5 1-0. 
    Here Frank resigned, since after his beleaguered knight moves to b4 or c7 I will play Kd6, Bc5 (if necessary), and win the pawn on c6, creating a powerful advanced pair of passed pawns on the queenside that will decide matters long before anything gets going on the kingside.  This game proves once again that there is no substitute for an active king in the endgame, and that bishops really do have great power over knights in open positions.  This win over Frank gave me my first victory in a postal tournament (I have since won one other).

E. Arnold (1856) – S. Stidd (1973)
[A34/05] English: Symmetrical
Internet,1999-2000
1.c4 c5 2.Nc3 Nf6 3.Nf3 e6 4.e4 
    This move already takes us off the normal paths of the English.  White establishes a big center right away even though he knows that he cannot restrain ...d5, the argument being that because Black has already played ...e6 it is a waste of time for him to play ...e5 and achieve what would otherwise be almost guaranteed equality in a blocked position.
4...Nc6 5 d3?! 
    Because White’s pawns on e4 and c4 do not restrain Black’s ...d5, this is probably a wasted move.  Eric, an excellent maneuvering player, wants to get a closed position, but I do not think that this system in general is the way to go about it.  The logical way to play this system for White is to develop pieces and wait for an opportune moment to get in d4, as in the game Ivanchuk-Anand from the 1992 Olympiad in Manila, which continued 5.Be2 d5 6.exd5 exd5 7.d4 Be7 8.Be3 cxd4 9.Nxd4 Nxd4 10.Qxd4 dxc4 11.Qxd8+ Bxd8 12.Bxc4 0-0 13.0-0 Bd7 14.Rfd1, with a small advantage according to NCO.
5...Qc7 
    Black has numerous options here because of White’s quiet opening.  ChessBase showed that this move was chosen by GM’s Michael Rohde and Ognjen Cvitan in games played in 1993 against IM Jay Bonin and Zelimir Smuk respectively, both Black wins.  I liked the move because it prevents White from playing Bf4 and opens up the possibility of playing a Hedgehog-type position, as Rohde did in his game.  At the time I was attracted to the familiar Black fantasy of getting to Hedgehog-type positions via the Taimanov Sicilian, the Queen’s Indian Defense, and the Symmetrical English, and so I wanted to play them whenever I could.
6.Be2 a6 7.Be3 
    Against Rohde, Bonin tried to argue that 5...Qc7 and 6...a6 were too slow and took a second move with the d-pawn by playing  7.d4.  Rohde’s rebuttal is elegant and instructive:  the game continued 7...cxd4 8.Nxd4 Nxd4 9.Qxd4 Bd6! (preventing f4 and working the bishop towards e5) 10.Be3 0-0 11.Rc1 Be5 12.Qd3 b6 (turning the position into a very nice Hedgehog for Black) 13.Bf3 Bb7 14.Na4? (this plan almost never works against a Hedgehog – I first learned this the hard way over the board against Chicago master Jim Marshall on the White side of a Taimanov Sicilian) 14...Bc6! 15.Nxb6 Rb8 16.c5 Bxb2 17.Rb1 Be5 18.Bd4 Bb5 (putting the question to the queen and insuring that White will never castle) 19.Qc3 Bxd4 20.Qxd4 e5! 21.Qe3 d6 (now the support point for the knight is undermined) 22.cxd6 Qxd6 (22...Qxb6 is not bad either, but it does not win a piece:  White can play 23.Qxb6 Rxb6 24.a4) 23.Nd5 Nxd5 24.exd5 e4! 25.Be2 (25.Bxe4 meets with disaster after 25...f5 and 26...Re1) 25...Bxe2 26.Kxe2 Qxd5 and Black is up a pawn with an overwhelming position.  Bonin resigned in short order after 27.Rhd1 Qxa2+.
7...b6 
    Now I’m really committing myself to playing a Hedgehog.  (The Hedgehog is a structure, not a move order, which Black can get to in a variety of ways and in response to a variety of White plans.)  This is actually the first new move of the game, deviating from Lars Schandorff’s 7...Ng4 against T. Christensen at Hillerod, 1995, which led to a fairly quick draw.  With Eric setting up so slowly, though, I had little fear of getting blown out of the water.
8.0-0 Bb7 9.Na4 
    Is this an error?  It hardly seems fair to call it one in the current position, but the fact is that it is almost impossible to win the b6 pawn without suffering in Hedgehog structures.
9...Rb8!? 
    Preparing to defend the b-pawn with 10...Ba8 in the event of 10.Qb3.  I wasn’t attracted to 9...Be7 10.Qb3 Bd8, and in addition after 9...Be7 White can try 10.b4 d6 11.Rb1.
10.Qb3 Ba8 11.Rac1 Be7 
    11...Bd6 is interesting as well, but I was fixated already at this point in playing d7-d5 in one move, opening the position for my pieces and saving time over the more typical d7-d6-d5 that is often played in the Hedgehog.  I had just gotten Mihai Suba’s wonderful book Dynamic Chess Strategy before playing this game, and was looking for any opportunity to break with ...d5 or ...b5, Black’s constant ‘positional threats’ in the Hedgehog, as Suba teaches.  It seemed as though it must be even better if I could play one of these pawn breaks in one step rather than two.  Now this thinking strikes me as a little superficial; Black wants to get something concrete out of these thrusts, and he is probably not in any danger, so it may be better to simply play ...d6 and wait patiently for an exploitable blunder by White before breaking the position open with one of these two pawns.  Still 11...Be7 is a fine move, since it leaves the option of either of these open.
12.Nd2 0-0 13.f4 Rfd8 
    Here Fritz prefers the slower strategy, playing 13...d6 with the suggested follow-up 14.f3 Nd7 15.Nc3 Bf6 16.Ne2.  This looks fine for Black, but I was going to play ...d5 come hell or high water.  The point of playing 13...Rfd8 is not only to support this pawn thrust but to allow my knight to come back to e8 (in the event of White playing e5) without trapping my rook on f8.
14.Bf3
    Black has his classic Hedgehog structure, and now it is time for...
14...d5 15.cxd5 exd5 16.e5 
    16.exd5 is met strongly by 16...Na5 17.Qc2 Nxd5 18.Bxd5 Rxd5, where White’s backward and isolated d-pawn and Black’s more active pieces give the second player the edge.
16...Ne8 17.Bf2 Qd7! 
    This starts a series of moves rearranging my pieces which are all possible, in true Hedgehog style, on the basis of tricky tactics which protect the apparently ‘hanging’ pawns.  My knight wants to get to e6 via c7, so my queen needs to get off that square.  The first point is that 18.Nxb6 can be met by 18...Qa7, winning two knights and the initiative for rook and pawn.
18.Nb1 Nc7 19.Nbc3 
    Eric once again correctly refrains from capturing on b6.  Now after 19.Nxb6? Rxb6! is possible because the Nc7 holds the pawn on a6; after 20.Qxb6 Rb8 the queen is trapped, and the most White can do from there is complicate matters with 21.Bg4 Qd8 22.Bxc5 Rxb6 23.Bxb6 Qb8 24.Bxc7 Qxc7 25.Bf3.  19.d4 c4 20.Qd1 Nb4 is also good for Black.
19...Ne6!
20.Nxb6? 
    Now with not one but two of my pawns “hanging,” Eric finally cracks.  This capture is still incorrect.  Since I’ve made four of my last five moves with this knight, White is probably best advised to follow suit and play 20.Ne2 here, keeping my knights out of d4.  The aggressive-looking 20.f5? is not a real option, since after 20...Ned4 21.Bxd4 (or 21.Qxd5 Qc7 22.Qc4 Nxe5 23.Bg3 b5) 21...Nxd4 22.Qd1 b5 traps the knight on a4.  But most amazingly, all three pawn captures are incorrect! 20.Nxd5 is met by 20...Ncd4 21.Bxd4 (or 21.Ndxb6 Qa7 22.Qd1 Bxf3 23.gxf3 Nxf4! (“watch Black’s pieces spring to life,” as someone once said about the Hedgehog) 24.Bxd4 Rxd4 and if White now tries to save the knight by 25.Nc4 there follows 25...Nxd3  which not only restores material equality but forces white to lose the exchange after 26.b3 or a piece or more after 26.Rc3 Nxb2) 21...Nxd4 22.Naxb6 (22.Ndxb6 Qa7 23.Qd1 Nxf3+ 24.gxf3 Rxb6 25.Nxb6 Qxb6 is equal in terms of material, but not for long:  White’s exposed king will come under attack, and he will lose at least one or two pawns just trying to cope with immediate threats like ...Qxb2, ...Qg6+ and ...Rxd3, ...c4+ and R or cxd3, and so on) 22...Bxd5 23.Bxd5 Qf5 24.Bxf7+ Qxf7 25.Qxf7+ Kxf7 26.Nc4 Ne2+ 27.Kh1 Nxc1 28.Rxc1 and Black, with a rook for three pawns, has a won game.  20.Bxd5, on the other hand, can be countered simply by 20...Na5 (20...Ncd4 probably works as well and may even be better, along lines similar to what we have seen) 21.Nxb6 Qa7, when Black gets a piece for two pawns.  The capture of the b-pawn, on the other hand, can be dealt with as in the game:
20...Qa7 21.Ncxd5 Ncd4
    The only move, but it takes care of everything.  An attack on the queen is combined with opening the long diagonal for my bishop, and Eric does not have quite enough to defend against all the threats.
22.Qc4 
    Other moves are no better.  22.Nxe7+ Qxe7 23.Bxd4 Nxd4 drops a piece for two pawns, while 22.Qd1 Nxf3+ 23.gxf3 (23.Qxf3 Rxb6 24.Nxe7+ Qxe7 again leaves White a piece up, and if White tries the aggressive continuation 25.Qg4 Rxd3 26.f5?, then 26...Rb4 wins) 23...Bxd5 24.Nxd5 Rxd5 is the same old story in terms of material and Black’s rooks are strongly placed for anything that might follow.
22...Rxb6 
    22...Nxf3+, as in some of the variations we have already examined, is not bad here or subsequently, but I want to keep a monster knight on d4, with an eye towards ...Ne2+, winning back the exchange, unless I am forced to do otherwise.
23.Bxd4 
    There is no way out of this mess for White; 23.Nxb6 Bxf3 24.Bxd4 Nxd4 transposes to the game, while 23.Nxe7+ Qxe7 24.Bxa8 Ne2+ 25.Kh1 Nxc1 again leaves Black up a rook for some change.
23...Nxd4 24.Nxb6 Bxf3! 
    More accurate than 24...Qxb6 25.Bxa8 Ne2+ 26.Kh1 Nxc1 27.Bd5 Ne2 28.Bxf7+ Kh8 in which White has three pawns for the piece and a passed pawn on e5.
25.gxf3 
    If White tries to complicate matters with 25.Nc8!?, Black can still keep an advantage with 25...Rxc8 26.Qxd4 Bxg2! (Fritz’ move; I had only considered 26...cxd4 27.Rxc8+ Bf8 28.Rxf3 Qb6, which is also good enough to win) 27.Rf2 cxd4 28.Rxc8+ Bf8 29.Rxg2 Qb7, followed by 30...Qf3 and the win of the d-pawn.
25...Ne2+ 26.Kh1 
    26.Kf2 Nxc1 27.Nc8 (27.Qxc1 Qxb6) 27...Nxd3+ 28.Qxd3 Rxc8 is just a better version of the game.
26...Nxc1 27.Nd5 Ne2 28.Qe4 Nd4
    The dust has settled, and Black, with a piece for two pawns, is much better.
29.Rc1? 
    I don't particularly like this move;  my c-pawn is strongly defended, and White, down material, can’t afford to play passively.  Better was 29.Rg1, as Eric plays on the next move anyway, so as to support his one real possibility for active play - advancing the e- and f-pawns towards my king.
29...Bf8 
    This is what the pros call ‘consolidating your advantage’ -  I retain the bishop and defend g7. 
30.Rg1 
    White admits that he has wasted a move, but possibilities like 30.Rc4 Qd7 31.Ne3 Qh3 are worse.
30...Kh8 
    Now everything holds together, and Black, with a piece for two pawns, can be considered clearly winning.  I needed to avoid continuations like 30...Qd7 31.Nf6+ Kh8 32.Qxh7#, though, and 30...g6 31.Nf6+ Kh8 was not appealing either.
31.Nc3 Qd7 32.Kg2 
    I had expected 32.Rg3 Nf5 33.Rg5 g6 34.Rg1 Qxd3 35.Rd1 Qxe4 36.fxe4 Rxd1+ 37.Nxd1 Nd4 with a technical endgame win to follow.
32...Nf5 
    Blockading the potentially dangerous f-pawn and threatening to take on d3.
33.Rd1 Rb8! 34.Rd2 Rb4 35.Qa8 
    Now the queen has been chased into the far corner of the board while White's monarch helplessly awaits his doom.
35...Kg8 36.Ne4 Ne3+ 37.Kf2 
    37.Kg1 or 37.Kh1 is met by 37...Qh3.
37...Qd4 38.a3 Nf5+ 
    Everything wins now, but this keeps the knight in the neighborhood of the king.
39.Kg2 Rxb2 40.Rxb2 Qxb2+ 41.Nf2 Ne3+ 42.Kg3 Qa1 0-1. 
    Here Eric resigned, because leaving the knight on f2 causes him to lose another piece, while saving the knight gets his king run out into the open with mate to follow: 43.Ng4 Qg1+ 44.Kh3 Qf1+ 45.Kh4 Nf5+ 46.Kg5 g6 47.Nf6+ Kg7 48.Nd7 h6+ 49.Kg4 Qg2#, or or 43.Ne4 Qg1+ 44.Kh4 Qxh2+ 45.Kg5 Qh6#.
© 2000 Sean Stidd
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© 2000 Michigan Chess Association
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